Improvement in saw-mills



Unirse rs'res sereni @serene 'ALEB BUND, GFRGHMOUD, INDIANA.

iMFRVMENT IN SAW/"MELLS Speriiicntion forming' part nf Letters Peteut Ne. LjL, dated September (i, 1864.

l'o all Iwhom 'it may concern mond, in the eountyofdv'nyne and State et' Indiana, have invented ay new and Iniproyed Sew-Mill; and I do hereby declare that the following is full, clear, and exnct descrip,-

Y .pitch een. he increased or diminishel at pleats- Be it known that I. CAMBI; BOND, of Riehtion thereof, which will enable others skilled A in the nrt to make und use Vthe seme, reference being Ahad to the accompanying drewings, forming e part of this specification, in

which- Figure 1 represents e h )ngitudinnl 'central section of this invention; Fig'. 2, :t horizonta1` section ot' the sume; Fie'. 3, :rdetaehed froiit-A elevation ot' t hevsfiw-guide Figffi, n detachedY sectional View ofthe weightedroller support; ing` the log; Fig. 5, :t horizontal section of the lower connection of the suw; a de: tnehe'd seetionui plan of one of the headbloeks.

innlurlletters 0i" refezenee indicate like parts. l

This invention relates to certain improvef ments in the mode ot' hanging the saw, se that its pitch eenbe adjusted it pleasure; also, to certain imliroremehis in the manner o t' plee- -ing and adjusting the guides to prevent thev saw from trembling' or springing; further, to :in improved inode et guiding' end supporting` the leg, und to n sliding` trietion-eluteh,1 in eeinbinntion with suitable levers :ind wheels,

to run the carriage in either ldirection by@ power or by hand, es the operator may desire.

A represents the traine-work which sup-i ports the ways B forthe enrriiige C, :ind from which rise two uprights, D, which nre steadied f by suitable braces and connected at the top by crossbnrs-E, which nre placed n short distance aper, es elenriy shown in Fig. l of the drawings. Secured tothe 'irreiit edge ei'tliefe g cross bars :rre the guides i, for the upper sfide or cross-heed, (v, and the sew H is se cured to this cross-head bye demis-I, et' pei euliar. construction. 'rising if'romfthe edgeszoi' the sil-w on either side/of the erosshead, and connected on top by rst-rep, e;- .Clfhe space between the arms I .of the chimp exceeds in width `the Width er" the cross head, end it set-screw, le, which passes through ihefront arm of the clamp Itud is tapped in the cross-heed, serves to ndjust the saw bnckwn-rd or forward, se that its lt consists et' two arms" ure.

' lwo guides, c, are secured to the under sur, f'nce ot' the lower 'crossfbelg E, I and these guides hear on the rear edge of 'said saw and assist inA keeping' l ventl it from trembling, The s-w is' further steadied by tu o spring-guides, d, whiehere secured to the inner surfaces of arms iff-,":thsit extend down fromthe upper guidesfl.' y(See the senr below the log.

rEhe lower end ofthe sew is connected to a llosshead, G', moving between the guides Ff, and it forms arsoeketu to receive oneerd lof the link J, the, oppositeend of which is pivoted to the arm get' .tlie bellcrnnk4 lever g h. The 'ends of the two `arms of this bell; crank lever nre connected Aby a segmental bruce, in order to strengthen them, and-it (the hell-crank lever) has its fnleruui on :t

horizon tei shaft-hf, having its beming'slin the lower part of the freine A. The erm `hfof the.

Vsume'connects by :t pitmsin, i, with'theleeoentrierwrist-pin j, projecting from the'fuee effe' disk, It, which is rigidlynttuehed to the end of the driving; shaft I.

Abelt running on, the pulley m, which is firmly keyed to seid driving shaft, servesfio impart motion to the sew and to the various working parts ot' the machine A belt, n, which extends from a pulley, n', on the driving'shzift ever a pulley, fnl, on the secondary shaft o, gives motion to the feed apparatus. The motionof the shaft o is train mitted bye belt, o", te the sheft p, andthe `motion of this shafis,transmitted by, the

faction of thel )iniou p and .cow-Wheels 2 tol l .e P

the shaft 1),. which extends underth'ejenrriege U, and te'whieh it piiiion,.q,.`is:firmly Qkeyed. 'This pinienpgearsin ntoethedrack ittaehed` to the under rsideof one of .the longitudine! beams et' the carriage-'in the usuel nimmer. The cogwheeip2 revolves ,he same .steadyend pref l l l l 'which is connected to the clutch q2, so thatl l l l l l loosely on its sha ft, and it rendered rigid with the same by a friction-clutch, (f,- which slides' on the shat'hand which is operated by the hand-lever (ji. The shaft q alsobears apulley, i g4, to which motion is imparted by a belt, qi', stretched over a pulley, g5, on the driving'- shai't. The pulley q* rotates loosely on the shaft q, and its motion is in adirection opposite to that ofthe cog-wheel p2. It is rendered rigid by the action ot the friction-clutch ggt, which is operated by the hand lever (ligand either of the two clutches is brought in action, or that both may be thrown out of gear. .lt' the clutch (ft, is thrownin gearwith the pulley q, the oog-wheel .p2 remains stationary', aid the shaft q 'turns in the direction of the arrow marked on it. in Figs. 1 and 2, and the carriage is gigg'ed back. .1f the clntchg2 is in .gear with the eog`-wheel p2, the shaft q turns in the direction opposite to the arrow marked thereon, and the carriage is moved against the saw.

'.lhc belt o', which transmits the motion from f the shat't c to the shaft p, runs on the conepulleys o2 o3, and a belt-shipper, o4, serves to i govern its position .on these pulleys. This belt shipper extends through the 'frame tor that side generally' occupied by the Sawyer, and by its action on thebelt o the sawyer is enabled to regulate the speed ofthe feed ma tion. The belt-shipper is operated by a verg tit-ai shaft, oi, which bears a hand-lever, 06,01: 5 its top and a pinion, 07, on its bottom end. Said pinion gears in atoothed rackv on theI rile ci' the belt-shipper, so that by turning' the hand-wheel the sawyer is enabled to move i the belt-shipper in either direction.

The `shalt q extends through the side ofthe `frame, and it bears a hand-Wheel, rf, so that by throwing` the clutch .ff q2* out ot' gear withV the cog` wheel p2 and with the pulley q4 the,I sawyer is enabled to gig backV and to feed by 3 hamhit' circumstances should render it desirahle,

The log' is supported by two headblocls, L Q L', one oi' 4which is rigidly attached to the carl ringe, while the other is adjustable thereon in 'the usual manner. Each of these head-blocks is provided with a slide#` r,runnin gin grooves i s s', and these slides are operated by pinions t t, gearing in the toothed racks on the under sidesot' the slides. Thepinions tt are mounted 1 on a shaft, 2l., which may be square or otheri wise arranged in.. such a 'ma-nner that it slides i freely through said pinions, but compels the same to rotate with it in whatever position it may be brought. By 'this shaft both slides arc moved simultaneously, and said slides are provided with lugs or lips o o', which bear against the log, so that by turning the shaft a lateral motion is imparted to the loe'. rlhe amount of this lateral motion ,egoverns` the; thickness of the boards to bcsawcd, and in l order to determine this thickness at a glance the headJhloalt L is provided with a graduated scale, ir, Fig'. (i, and an index, zia/,on the slide r indica-tes the amount of motion imparted to the log in a lateral direction. The shaft u is operated by a hand-lever, ufl, which turns loosely on its end,and which is armed with a pawl, w3, that engages with the teeth of the ratchet-wheel, te, which is firmly keyed to the shaftu.

In order to steady the log in front of the saw, a roller, M,is secured ina t'ra1ne,N, which swings on a pivot, o, as clearly shown in Fig. 4c of the drawin 'From the outer end of the swinging frame a weight, 0, is suspended, so that by the action of this weight the roller is pressed up against the under side of 'the-loo'. The Weight O is connected to the swinging frame N by means ot' an arm, a?, which is so arranged that it can be shifted in and out, and thattheleverage ot' the weight can be increased or diminishet'l, as may be desired.

When the swinging frame N. is raised, a springstop, b2, catches under it and prevents the weight from bearing againstthe under side ofthe loe". This springvstop can be withdrawn by the action ot a hand-lever, il, which is placed within convenient reach ot' the Sawyer.

By-these various devices the Sawyer has complete control over the machine from his stand, the saw is steadied, and the thickness of the cut can be gaged to any desired point.

Havingthus described my invention, I claim f as new and desire to secure by Letters Patent- 1. The application of the clamp Iand setserew b, in combination with the cross-head G ofthe saw H, substantially as herein specitied, so that by the action 'of said set-screw the pitch of the saw can be adjusted.

v 2. The vertically-adjestable spring-guidesd, in combination with the arms e and saw. l l', constructed and operating' substantially as and for the purpose set forth.

The sliding fiiction-clutch l2 (fit, in combi nation with the pulley Q co;;,\vlieel p2, shaft q, and hand-wheel gl, applied substantially as herein specified, so that the carriag'ccan be moved in either direction by hand or by power, as may be desirable. A

4. The hand-wheel oG on the vertical arbor o, in combination with the belt-shipper o, concpulleys o2 o, and belt o', applied suhstantiall y as herein set forth, so that the sawyer is enabled by turning the hand-wheel to regulate the feed. y v

5. The swinging frame roller M, and weight O, in combination with the springstop b2 and hand-lever Zi, constructed and voperating` substantially as and for the purpose set forth.

(Midill BONN.

Witnesses: l l

WILLIAu BELL, S. L. lIrrrLn. 

